10月5日,多利羊的克隆者之一,诺丁汉大学生物学院奇斯-坎布尔教授不幸逝世,享年58岁。
10月8日,瑞典科学院宣布今年两位科学家获得2012年生物或医学诺贝尔奖,他们是剑桥大学79岁的约翰-格登教授和日本京都大学的山中伸弥教授。
格登的贡献是他1962年用青蛙的肠细胞克隆了一只青蛙,而山中伸弥的贡献是2006年,他把人体皮肤细胞培养成为干细胞。
但是,光从克隆技术的影响力来说,最大的贡献是奇斯-堪布尔教授和他在爱丁堡大学罗斯林(Roslin)研究所的导师,爱恩-威尔幕特(Ian
Wilmut)教授。
在上世纪90年代初,威尔幕特教授领导的研究团队在爱丁堡大学的罗斯林研究所,创造了一个又一个突破性的研究成果。其中,最轰动世界的,就是多利羊的诞生。克隆多利羊的科学原理,当然是基于格登的青蛙克隆理论,也就是说,生物体的每一个细胞所包含的基因是一样的。因此,可以用某个生物体的任何细胞进行培养再生,变成那个生物体的整体。
不过,青蛙不是哺乳动物,它属于低级动物。而低级动物的克隆,相对于高级动物,尤其是哺乳动物的克隆,要容易得多。羊是高级哺乳动物,克隆是很不容易的事情。可是,经过多年的不断努力,威尔幕特和坎贝尔终于在1996年成功的克隆了多利羊。
1999年,诺丁汉大学把堪布尔聘请到了生物学院当教授,并由他带领一个团队继续他的生物发育研究。在他的领导下,克隆猪、克隆牛、更多的克隆羊,产生了。他的贡献是惊人的,他的克隆技术,将可能为今后再生生物,以及人类器官的批量生产,做出无可估量的贡献。
应该说,格登、山本、威尔幕特和堪布尔,都是有资格取得生物或医学诺贝尔奖的。不过,2012年的诺贝尔奖只能给了格登和山本,威尔幕特和堪布尔只能暂时得不到,也不知道今后能不能得到。
然而,不管得到诺贝尔奖与否,坎贝尔和威尔幕特的贡献是不可低估的。诺丁汉大学在沉痛悼念坎贝尔的同时,世界也失去了一位科学泰斗。这个科学泰斗,年轻轻就已经走了,而他留下来的,将是今后医学和生物学发展无法估量的科学遗产。
下面是诺丁汉大学关于奇斯-堪布尔教授的报道。
Professor
Keith Campbell, 1954–2012
Tributes
have been paid to internationally renowned scientist Professor
Keith Campbell, who has died at the age of
58.
Professor
Campbell was instrumental in the creation of Dolly the Sheep, the
first cloned mammal, a breakthrough which paved the way for the
successful cloning of many other mammal species.
Professor
Campbell was known around the world for his pioneering work and was
jointly awarded the Shaw Prize for Life Science and Medicine in
2008.
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The
Shaw Prize – one of the most prestigious scientific accolades in
the world – honours individuals who have achieved significant
breakthroughs in scientific research, and whose work has resulted
in a positive and profound impact on mankind.
Professor
Campbell was a cell biologist/embryologist with a research career
spanning more than 30 years, the majority of which was in the field
of cell growth and differentiation. He joined the University of
Nottingham in 1999 as Professor of Animal Development in the School
of Biosciences.
A brilliant scientist
Professor
David Greenaway, Vice-Chancellor of The University of Nottingham,
said: “Keith was a brilliant scientist. His work was genuinely
transformational and inspirational. His pioneering research was
revolutionary.
“That,
together with his passion for science, will ensure he is
justifiably remembered for all he accomplished. Keith was also an
outstanding colleague whose absence leaves a huge gap. He will be
greatly missed. I offer my deepest respect and sympathy to his
family.”
An
online Book of Condolence has been set up on the University
of Nottingham website.
Professor Campbell began his career by qualifying as a Medical
laboratory Technologist specialising in Medical Microbiology,
before obtaining a BSc (Hons) in Microbiology from Queen Elizabeth
College London. He then went onto the Marie Curie Institute and
subsequently the University of Sussex, where he was awarded a
D.Phil.
The
Roslin Institute
Following
two postdoctoral positions he joined the Roslin Institute in
Scotland in 1991, where he applied his previous experience to the
production of mammalian embryos by nuclear transfer. Dolly the
Sheep, the first mammal to be cloned from an adult derived somatic
cell, was born in 1996.
Professor
Sir Ian Wilmut, who worked with Professor Campbell on the creation
of Dolly the Sheep, said: “Always cheerful and friendly, Keith will
be greatly missed by all of his friends and colleagues.
“His
research blossomed after he came to Roslin Institute where in a
series of papers he put the intellectual framework into the method
of mammalian cloning that ultimately led to the birth of Dolly in
1996. He then moved to PPLTherapeutics, the company that was spun
out from Roslin Institute, where that procedure and his expertise
led to the birth of cloned and genetically modified sheep, pigs and
cattle.
“In
1999 he was tempted into academia by an offer from the University
of Nottingham as Professor of Animal Development. There he
continued his research on the cloning and genetic modification of
livestock. Much of this research was presented and discussed at the
annual meeting of the International Embryo Transfer Society where
he will be remembered as an enthusiastic participant in discussions
on current topics. He will be sorely missed, but not
forgotten.”
Pioneering
studies
Professor
Kevin Sinclair worked with Professor Campbell at the University of
Nottingham’s School of Biosciences.
Professor
Sinclair said: “Keith was a giant in the field of reproductive
biology. His pioneering studies into cell-cycle control and
cellular differentiation led to the programme of work at Roslin
that gave birth to the first mammal to be cloned from adult cells –
ie. Dolly the sheep.
“This
pioneering study has helped pave the way for others to develop gene
and stem-cell based strategies for therapeutic purposes. He was an
inspiration to both his colleagues and students at Nottingham, and
will be greatly missed by all. Our thoughts are currently with his
family and loved ones at this difficult time.”
Professor
Neil Crout, Head of the School of Biosciences, said: “Keith was a
valued and respected colleague who will be sadly missed across the
School of Biosciences.
“His
work and scientific achievements speak for themselves and his death
is a great loss for developmental biology. Inevitably most people
will remember him for Dolly the sheep although his recent work was
focused on fundamental and applied stem cell research as a tool for
the study of human disease.”
A
great friend and collaborator
Professor
Jus St.John, Director of the Centre for Reproduction
& Development at Monash University, Australia,
said: “Keith Campbell was an outstanding and inventive scientist
whose foresight and work led to major changes in how we now ask
scientific questions and make significant advances.
“Very
few scientists of Keith's calibre exist and when they are
successful, their impact is immense. The generation of Dolly, which
he was the intellectual leader of, was an advance that triggered a
revolution in scientific investigation. Without Keith's input, the
field of cellular reprogramming would not have made the significant
advances that it has.
“I
will sorely miss Keith as a great friend and collaborator. I will
especially miss designing scientific experiments with him in a
relaxed manner that encouraged one to delve deeper.”
Professor
Bob Webb, Chief Executive and Principal of the SRUC (Scotland’s
Rural College), was a colleague of Professor Campbell at both the
University of Nottingham and the Roslin Institute.
Professor
Webb said: “Keith’s work has had a major impact on our thinking and
on our research. He, along with Professor Ian Wilmut and the team,
achieved something that at the time was completely novel and ground
breaking. This breakthrough opened up new opportunities which have
had major scientific impact. His death is a very sad loss for the
scientific community – not just in the UK, but internationally as
well.”
A
deep love for science
Jose
Cibelli, Professor of Animal Biotechnology at Michigan State
University in the USA, said: “I knew Dr Campbell for almost two
decades, first as a competitor, then as a colleague and then as a
dear friend.
“While
he is known worldwide by the general public because of his role in
the generation of Dolly the cloned sheep, his contributions to
science are enormous and will be forever lasting. He developed new
techniques to produce therapeutic proteins in domestic animals and
was the first person to clone pigs, now being used for the
generation of organs to potentially treat patients in need of organ
transplantation.
“Thanks
to his dedication and brilliant intellect the field of regenerative
medicine is today closer to the clinics. We anticipate that within
the next five years, patients suffering from degenerative diseases
will be treated – if not cured – using technology introduced by Dr
Campbell. All these scientific breakthroughs Professor Campbell
gave us did not happen by chance; they are the product of years of
study, hands-on experimentation and above all, a deep love for
science.”
Dr
Alan Colman, Executive Director of the Singapore Stem Cell
Consortium, first met Professor Campbell when he was a postgraduate
at Sussex University.
Paying
tribute to Professor Campbell’s key role in the work that led to
the creation of Dolly the Sheep, Dr Colman said: “The Dolly
experiment could not have succeeded without the experimental
precision and persistence Keith demonstrated. It was a seminal
demonstration of the ability of the mammalian egg to reprogram a
somatic nucleus back to a pluripotent state. The main legacy of
Dolly was the impact it had on fellow scientists – what seemed
impossible suddenly seemed achievable. All down to Keith’s
work.
“Science
has lost an exceptional scientist and I have lost a great
friend.”
Professor
Campbell is survived by his wife, Kathy Campbell
and his two adult daughters, Claire and Lauren Mills.
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