Department of Physiology, All India Institute of Medical Sciences, Bhubaneswar, India.
Curr Stem Cell Res Ther. 2020;15(2):98-101. doi: 10.2174/1574888X14666191107095728.
The stem cell exchange during pregnancy is thought to remain chimeras for life. Few studies recently revealed that maternal transfer of viable stem cells to the offspring continues even after birth during breastfeeding. Some of these stem cells are likely to be integrated into different organs (brain, blood, kidneys, and pancreas) including neurons and insulin-producing cells in the pancreas to become functional cells. This finding opens a new avenue for research on therapeutic uses of breast milk- derived stem cells. Recently Dr. Foteini Hassiotou used glowing mice, which were genetically modified to express a gene called tdTomato that causes cells to appear red under fluorescence light. These mice were mated, and their babies were swapped with the pups of another, unmodified mother mouse. The new pups suckled the modified mouse and, as a result, obtained glowing red stem cells from breast milk. The study has never been replicated in humans, so it is not clear yet if the findings apply to humans as in the case of mice. However, the results of the study are the jumping-off points for future research on human breast milk stem cells and their possible application in stem cell therapies. Additional studies are necessary to understand the passage of human breast milk stem cells through the neonate's GI tract, and passage to the systemic circulation.
怀孕期间的干细胞交换被认为会终生保持嵌合体状态。最近的一些研究表明,即使在出生后母乳喂养期间,母体向后代转移有活力的干细胞仍在继续。这些干细胞中的一些可能会整合到不同的器官(大脑、血液、肾脏和胰腺)中,包括胰腺中的神经元和产生胰岛素的细胞,成为功能性细胞。这一发现为研究母乳衍生干细胞的治疗用途开辟了新途径。最近,Foteini Hassiotou 博士使用了发光老鼠,这些老鼠经过基因改造,表达了一种名为 tdTomato 的基因,这种基因会导致细胞在荧光下呈现红色。这些老鼠交配后,它们的幼崽与另一只未经改造的母鼠的幼崽进行了交换。新的幼崽吸食经过改造的老鼠的奶,结果从母乳中获得了发光的红色干细胞。这项研究尚未在人类中复制,因此目前尚不清楚这些发现是否适用于人类,就像在老鼠身上一样。然而,这项研究的结果为未来对人类母乳干细胞及其在干细胞治疗中的可能应用的研究提供了起点。需要进一步的研究来了解人类母乳干细胞通过新生儿胃肠道的传递以及传递到全身循环的情况。