Transmission of Maternal Proteins into Oocytes

Glass, Laurel E.

doi:10.1016/b978-0-08-017571-3.50008-5

Cited by 10 publications

(7 citation statements)

References 63 publications

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“…Uptake of serum proteins into the oocyte has been observed (Glass, 1971), and electron microscopic observations suggest active pinocytosis at the oocyte surface (Zamboni, 1974). Whether proteins entering the oocyte are degraded to amino acids and used for resynthesis is not clear.…”

Section: Accumulation Of Total Protein and Time Course Of The Rate Ofmentioning

confidence: 96%

Gene Expression During Oogenesis and Oocyte Development in Mammals

1985

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Section: Accumulation Of Total Protein and Time Course Of The Rate Ofmentioning

confidence: 96%

Gene Expression During Oogenesis and Oocyte Development in Mammals

1985

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“…Such molecules entering the oocyte may be transporting biologically active molecules into the egg. Thus enzymes or other functional molecules may be carried into the ovum and some of them may be degraded to provide the necessary precursors for internal synthesis in the developing egg [Glass, 1971]. Much more experimental attention needs to be paid to the question of storage of such molecules which may contribute significantly to embryonic viability.…”

Section: Mvb and Yolkmentioning

confidence: 99%

Oogenesis in the Marsupial Stripe-Faced Dunnart, <i>Sminthopsis macroura</i>

Kress

Merry

Selwood

2001

Cells Tissues Organs

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The timetable of oogenesis in Sminthopsis macroura is accelerated like in other marsupials showing relatively early maturation of the female. On the day of parturition (day 0) migration of primordial germ cells to the indifferent gonads has been completed. Follicular growth seems not to correspond to the biphasic pattern, in which oocyte and follicle grow synchronously until antral stages when only the follicle increases in size, but shows a continuous growth of the oocyte and the follicle up to the time of ovulation. During primordial and early primary follicle stage a paranuclear complex is present in the oocyte, consisting mainly of smooth tubules of endoplasmic reticulum. Cortical granules appear early in oocytes in secondary follicles. The conspicuous inclusions in the antral follicle are the clusters of electron-lucent vesicles in the oocyte. These inclusions grow from multivesicular bodies (MVB), which are formed from Golgi and endoplasmic reticulum vesicles. Further increase in the size of MVB involves the incorporation of endocytic vesicles and the coalescence of larger vesicles. The polarized nature of the oocyte at ovulation is due in part to the to accumulation of these vesicles in the cytoplasm opposite the eccentrically placed nuclear material.

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“…The rate of amino acid uptake across the oocyte membrane increases significantly during maturation (Moor & Smith, 1978 (Glass, 1971) while Moor, Smith & Dawson (1980) have shown that a number of metabolic products, including choline, uridine and inositol, can only enter the oocyte via the cumulus cells, probably by direct intercellular transfer through junctional complexes. In addition, the cumulus cells also provide an energy source for the oocyte in the form of pyruvate, the oocyte itself being unable to metabolize glucose (Biggers, Whittingham & Donahue, 1967).…”

Section: Introductionmentioning

confidence: 99%