The concept of programmed cell death, or apoptosis, has exploded into a major scientific field of interest for cell biologists, oncologists, and many other biomedical researchers. Apoptosis occurs throughout the lifetime of most multicellular organisms. During development, for example, the selective death of cells is vital to remove tissue between the digits to produce fingers and toes. Apoptosis is also necessary to destroy cells that represent a threat to the integrity of the organism, for example cells infected by a virus. In many cancers the genes regulating apoptosis are defective, producing immortal, continuously proliferating cells. This book discusses the philosophical and technical difficulties in defining the moment of death for a cell, as well as the biological implications and significance of programmed cell death. Recent developments in the genetic control and interacting gene networks associated with apoptosis are presented. The book is written for advanced undergraduate and postgraduate students, and is highly illustrated to aid understanding.
The question of why an individual would actively kill itself has long been an evolutionary mystery. Pierre M. Durand’s ambitious book answers this question through close inspection of life and death in the earliest cellular life. As Durand shows us, cell death is a fascinating lens through which to examine the interconnectedness, in evolutionary terms, of life and death. It is a truism to note that one does not exist without the other, but just how does this play out in evolutionary history? These two processes have been studied from philosophical, theoretical, experimental, and genomic angles, but no one has yet integrated the information from these various disciplines. In this work, Durand synthesizes cellular studies of life and death looking at the origin of life and the evolutionary significance of programmed cellular death. The exciting and unexpected outcome of Durand’s analysis is the realization that life and death exhibit features of coevolution. The evolution of more complex cellular life depended on the coadaptation between traits that promote life and those that promote death. In an ironic twist, it becomes clear that, in many circumstances, programmed cell death is essential for sustaining life.
A million cells in our bodies die every second--they commit suicide by activating a process called apoptosis or other forms of programmed cell death. These mechanisms are essential for survival of the body as a whole and play critical roles in various developmental processes, the immune system, and cancer. In this second edition of Douglas Green's essential book on cell death, Green retains the bottom-up approach of the first edition, starting with the enzymes that carry out the execution (caspases) and their cellular targets before examining the machinery that connects them to signals that cause cell death. He also describes the roles of cell death in development, neuronal selection, and the development of self-tolerance in the immune system, as well as how the body uses cell death to defend against cancer. The new edition is fully updated to cover the many recent advances in our understanding of the death machinery and signals that control cell death. These include the mechanisms regulating necroptosis, mitophagy, and newly identified processes, such as ferroptosis. The book will thus be of great interest to researchers actively working in the field, as well as biologists and undergraduates encountering the topic for the first time.
"Everyone dies, and so, we naturally associate death with the end of an individual life. However, life is much more complicated, and death is actually interwoven into biology at many levels. Normal development and life could not exist without carefully regulated death of certain cells and as one defense against disease. Other cells wear out and die and must be replaced regularly. On a larger scale, death has influenced the direction of entire species. In fact, death has shaped all life through the cycle of life and death, throughout time, and in normal development. It affects our cells, our development, and our life"--
#1 NEW YORK TIMES BESTSELLER • “The story of modern medicine and bioethics—and, indeed, race relations—is refracted beautifully, and movingly.”—Entertainment Weekly NOW A MAJOR MOTION PICTURE FROM HBO® STARRING OPRAH WINFREY AND ROSE BYRNE • ONE OF THE “MOST INFLUENTIAL” (CNN), “DEFINING” (LITHUB), AND “BEST” (THE PHILADELPHIA INQUIRER) BOOKS OF THE DECADE • ONE OF ESSENCE’S 50 MOST IMPACTFUL BLACK BOOKS OF THE PAST 50 YEARS • WINNER OF THE CHICAGO TRIBUNE HEARTLAND PRIZE FOR NONFICTION NAMED ONE OF THE BEST BOOKS OF THE YEAR BY The New York Times Book Review • Entertainment Weekly • O: The Oprah Magazine • NPR • Financial Times • New York • Independent (U.K.) • Times (U.K.) • Publishers Weekly • Library Journal • Kirkus Reviews • Booklist • Globe and Mail Her name was Henrietta Lacks, but scientists know her as HeLa. She was a poor Southern tobacco farmer who worked the same land as her slave ancestors, yet her cells—taken without her knowledge—became one of the most important tools in medicine: The first “immortal” human cells grown in culture, which are still alive today, though she has been dead for more than sixty years. HeLa cells were vital for developing the polio vaccine; uncovered secrets of cancer, viruses, and the atom bomb’s effects; helped lead to important advances like in vitro fertilization, cloning, and gene mapping; and have been bought and sold by the billions. Yet Henrietta Lacks remains virtually unknown, buried in an unmarked grave. Henrietta’s family did not learn of her “immortality” until more than twenty years after her death, when scientists investigating HeLa began using her husband and children in research without informed consent. And though the cells had launched a multimillion-dollar industry that sells human biological materials, her family never saw any of the profits. As Rebecca Skloot so brilliantly shows, the story of the Lacks family—past and present—is inextricably connected to the dark history of experimentation on African Americans, the birth of bioethics, and the legal battles over whether we control the stuff we are made of. Over the decade it took to uncover this story, Rebecca became enmeshed in the lives of the Lacks family—especially Henrietta’s daughter Deborah. Deborah was consumed with questions: Had scientists cloned her mother? Had they killed her to harvest her cells? And if her mother was so important to medicine, why couldn’t her children afford health insurance? Intimate in feeling, astonishing in scope, and impossible to put down, The Immortal Life of Henrietta Lacks captures the beauty and drama of scientific discovery, as well as its human consequences.
Elegant, suggestive, and clarifying, Lewis Thomas's profoundly humane vision explores the world around us and examines the complex interdependence of all things. Extending beyond the usual limitations of biological science and into a vast and wondrous world of hidden relationships, this provocative book explores in personal, poetic essays to topics such as computers, germs, language, music, death, insects, and medicine. Lewis Thomas writes, "Once you have become permanently startled, as I am, by the realization that we are a social species, you tend to keep an eye out for the pieces of evidence that this is, by and large, good for us."
Mitochondria are tiny structures located inside our cells that carry out the essential task of producing energy for the cell. They are found in all complex living things, and in that sense, they are fundamental for driving complex life on the planet. But there is much more to them than that. Mitochondria have their own DNA, with their own small collection of genes, separate from those in the cell nucleus. It is thought that they were once bacteria living independent lives. Their enslavement within the larger cell was a turning point in the evolution of life, enabling the development of complex organisms and, closely related, the origin of two sexes. Unlike the DNA in the nucleus, mitochondrial DNA is passed down exclusively (or almost exclusively) via the female line. That's why it has been used by some researchers to trace human ancestry daughter-to-mother, to 'Mitochondrial Eve'. Mitochondria give us important information about our evolutionary history. And that's not all. Mitochondrial genes mutate much faster than those in the nucleus because of the free radicals produced in their energy-generating role. This high mutation rate lies behind our ageing and certain congenital diseases. The latest research suggests that mitochondria play a key role in degenerative diseases such as cancer, through their involvement in precipitating cell suicide. Mitochondria, then, are pivotal in power, sex, and suicide. In this fascinating and thought-provoking book, Nick Lane brings together the latest research findings in this exciting field to show how our growing understanding of mitochondria is shedding light on how complex life evolved, why sex arose (why don't we just bud?), and why we age and die. This understanding is of fundamental importance, both in understanding how we and all other complex life came to be, but also in order to be able to control our own illnesses, and delay our degeneration and death. 'An extraordinary account of groundbreaking modern science... The book abounds with interesting and important ideas.' Mark Ridley, Department of Zoology, University of Oxford
Cells and Tissues: An Introduction to Histology and Cell Biology begins by explaining why histology should be studied. Some chapters follow on the techniques for studying cells and tissues, the anatomy of the cell, the epithelia, the connective tissues, and the blood. This book also covers topics on the immunity against foreign material; contractility, specifically at how it is brought about and at how the system changes in a stationary cell; and harnessing of contraction to produce movement. This text also looks into the communication systems within cells, the life and death of cells, and the histological sections of small intestine. The responses of the body to injury in the processes of inflammation and repair are also explored. This book will be useful to students starting in histology, though it does assume some elementary knowledge of biochemistry and of the structure of the mammalian body.
Acclaimed biologist Lewis Wolpert eloquently narrates the basics of human life through the lens of its smallest component: the cell. Everything about our existence— imagination and reproduction, birth and death—is governed by our cells. They are the basis of all life in the universe, from the tiniest of bacteria to the most complex of animals. Genes in developing embryos determine the makeup of individuals, and the rapid firing between nerve cells creates the spirit of who we are. When we age, our cells cannot repair the damage they have undergone; when we get ill, it is because cells are so damaged they stop working and die. In the tradition of Lewis Thomas’s science classic The Lives of a Cell, Wolpert, an internationally acclaimed embryologist, draws on the recent discoveries of genetics to demonstrate how human life derives from a single cell and then grows into a body: an incredibly complex society made up of billions of cells. Wolpert sensitively examines the science behind often controversial research topics that are much discussed by rarely understood—stem cell research, cloning, DNA, and mutating cancer cells—all the while illuminating how the intricacies of cellular behavior bear directly on human behavior. Wolpert isn’t afraid to tackle the tough questions, including how and why single cells evolved into complex organisms and, first and foremost, what gave rise to the original cell, the origin of all life. Lively and passionate, How We Live and Why We Die is both an accessible guide to understanding the human body and a deeply reverent meditation on life itself.
